the field of medicine that specializes in the study of tumors. oncology. The branch of medicine that deals with the study and treatment of tumors.
Who are they? Millennials are currently aged 20-35, or born between 1980 and the end of 1994 (with some more generous definitions taking in those born up to 2000). They also get called Generation Y, because they follow on from Generation X (born 1965-1979), and other, less flattering names.
1 As of 2012, only 19 percent of Millennials said that, generally, others can be trusted. 2  There are about 76 million Millennials in the United States (based on research using the years 1978-2000). 3  Millennials are the last generation born in the 20th century.  Twenty percent have at least one immigrant parent.